Bottom fold bag and method of making same

Abstract

Bags for containing various retail items, such as food items, and methods of forming the same. In some aspects, a bag having a top and bottom is provided. The bags can include a first layer and a second layer opposite the first layer and uniformly extending from the first layer. In some aspects, the bag can further include a first side seam between a side of the first layer and an opposing side of the second layer and a second side seam between a side of the second layer and an opposing side of the second layer. The first layer and the second layer each have an un-folded edge substantially parallel to the bottom fold. In some aspects, the bags include a bottom V-shaped fold extending along a transverse axis relative to the first side seam and the second side seam, the bottom V-shaped fold forming a seamless bottom.

What is claimed is: 
     
         1 . A bag having a top and bottom, comprising:
 a first layer;   a second layer opposite the first layer and uniformly extending from the first layer;   a first side seam between a side of the first layer and an opposing side of the second layer;   a second side seam between a side of the second layer and an opposing side of the second layer; and   a bottom fold extending along a transverse axis relative to the first side seam and the second side seam, the bottom fold forming a seamless bottom;   wherein the first layer and the second layer each have an un-folded edge that is substantially parallel to the bottom fold.   
     
     
         2 . The bag of  claim 1 , wherein the bottom fold is a V-shaped fold. 
     
     
         3 . The bag of  claim 1 , wherein the first layer extends beyond the second layer to form a tab portion. 
     
     
         4 . The bag of  claim 1 , wherein the first and second layers are formed of paper. 
     
     
         5 . The bag of  claim 1 , wherein the first and second layers are formed of at least one of a low density polyethylene, high density polyethylene, thermoplastic, fabric, nylon, or paper. 
     
     
         6 . The bag of  claim 1 , wherein the first and second side seams are formed by adhering the first layer to the second layer by applying an adhesive between the first and second layers. 
     
     
         7 . The bag of  claim 1 , wherein the first and second side seams are formed by adhering the first layer to the second layer using any of a sideweld, heat seal, or sewn seal. 
     
     
         8 . A method of forming bags having a seamless bottom, comprising:
 receiving a sheet of bag material from a roll;   folding the sheet of bag material to form a first layer, second layer, and seamless bottom, the first layer and the second layer each have an un-folded edge that is substantially parallel to the seamless bottom; and   adhering the sheet of bag material in predetermined locations to form a plurality of side seams between the first layer and second layer.   
     
     
         9 . The method of  claim 8 , wherein:
 folding the sheet of bag material comprises folding the sheet of bag material along a longitudinal axis of the sheet of bag material.   
     
     
         10 . The method of  claim 8 , wherein adhering the sheet of bag material comprises applying an adhesive to the sheet of bag material. 
     
     
         11 . The method of  claim 9 , wherein the adhesive is a food-safe adhesive. 
     
     
         12 . The method of  claim 8 , wherein adhering the sheet of bag material comprises forming a sideweld, heat seal, or sewn seal. 
     
     
         13 . The method of  claim 9 , wherein folding the sheet of bag material comprises using a plow fold to form a V-shaped bottom. 
     
     
         14 . The method of  claim 8 , further comprising:
 prior to folding the sheet of bag material, cutting the sheet of bag material along a transverse axis at predetermined lengths such that each length of bag material is sufficient to form a first bag layer and a second bag layer when folded along an axis that is transverse to the sheet.   
     
     
         15 . The method of  claim 8 , wherein folding the sheet of bag material comprises folding the sheet of bag material along an axis that is transverse to the sheet such that a V-shaped bottom is formed. 
     
     
         16 . The method of  claim 8 , wherein folding the sheet of bag material comprises using opposing folding rollers to form the bottom of the bag with a V-shaped bottom by pulling the sheet material through the opposing folding rollers. 
     
     
         17 . The method of  claim 8 , wherein the sheet of bag material is formed of paper. 
     
     
         18 . The method of  claim 8 , wherein the sheet of bag material is formed of at least one of low density polyethylene, high density polyethylene, thermoplastic, fabric, nylon, or paper. 
     
     
         19 . The method of  claim 8 , further comprising cutting the folded and adhered sheet material between adjacent side seams to form a plurality of bags. 
     
     
         20 . A method of forming bags having a seamless bottom, comprising:
 receiving a sheet of bag material from a roll;   folding the sheet of bag material to form a first layer, second layer, and seamless bottom; and   adhering the sheet of bag material in predetermined locations to form a plurality of side seams between the first layer and second layer by applying an adhesive to the sheet of bag material;   wherein the seamless bottom has a V-shaped fold.   
     
     
         21 . The method of  claim 20 , wherein the adhesive is a food-safe adhesive. 
     
     
         22 . The method of  claim 20 , further comprising cutting the folded and adhered sheet material between adjacent side seams to form a plurality of bags.